Discussions By Condition: Common conditions

I haven't gotten my Period yet, help!

So, I'm pretty much fully devolped Or however you spell it, all my friends have gotten their period. But I haven't! And I'm more deveolped then them! So, I'm really confused. I mean, I've been having the signa of it and I've been spotting, but, I still haven't gotten it! I'm really confused and worried, help?